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Simplifying 3n + 21 = -3 + -2n Reorder the terms: 21 + 3n = -3 + -2n Solving 21 + 3n = -3 + -2n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '2n' to each side of the equation. 21 + 3n + 2n = -3 + -2n + 2n Combine like terms: 3n + 2n = 5n 21 + 5n = -3 + -2n + 2n Combine like terms: -2n + 2n = 0 21 + 5n = -3 + 0 21 + 5n = -3 Add '-21' to each side of the equation. 21 + -21 + 5n = -3 + -21 Combine like terms: 21 + -21 = 0 0 + 5n = -3 + -21 5n = -3 + -21 Combine like terms: -3 + -21 = -24 5n = -24 Divide each side by '5'. n = -4.8 Simplifying n = -4.8
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